US4252347A - Device for connecting pipe ends - Google Patents

Device for connecting pipe ends Download PDF

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Publication number
US4252347A
US4252347A US05/935,978 US93597878A US4252347A US 4252347 A US4252347 A US 4252347A US 93597878 A US93597878 A US 93597878A US 4252347 A US4252347 A US 4252347A
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US
United States
Prior art keywords
bearing ring
ring
coupling part
bearing
stop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US05/935,978
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English (en)
Inventor
Karl Weinhold
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE19782804017 external-priority patent/DE2804017C3/de
Application filed by Individual filed Critical Individual
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Publication of US4252347A publication Critical patent/US4252347A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces

Definitions

  • the invention relates to a device for connecting two pipe ends, having a bearing ring on one pipe end which is in the shape of a spherical segment, having a coupling part surrounding the bearing ring, which is axially displaceable with respect to the bearing ring and the pipe end and has a bearing surface matched to the shape of the bearing ring on its inside, having a seal between this bearing surface and the bearing ring, having a stop ring projecting inwards, which engages behind the bearing ring, and having a connecting part connected to the other pipe end said connecting part being capable of connection to the coupling part.
  • the connecting part is constructed as a plug part which can be inserted into the coupling part and is also provided with an outer collar as is the coupling part so that shell parts which can be closed by a lever lock and are provided for the purpose of connecting these two parts to flanges directed radially inwards can be used.
  • a device for connecting two pipe ends comprising a bearing ring for attachment sealingly to one pipe end and defining a spherical outer surface and an annular end surface lying in a plane inclined to a plane extending at right angles to the ring axis, a coupling part surrounding the bearing ring, axially displaceable relative thereto and defining an inner spherical surface matched to said outer spherical surface of said bearing ring, a stop ring on said coupling part extending inwardly behind said bearing ring, a seal between said outer spherical surface of said bearing ring and said inner spherical surface of said coupling part, an annular inclined stop surface associated with said coupling part and complementary to and in engagement with said annular end surface of said bearing ring, and a connecting part for attachment to the other pipe end connectable with said coupling part.
  • FIG. 1 shows a longitudinal section through the device of a first embodiment of the invention including two pipe ends in a position pivoted with respect to each other;
  • FIG. 2 shows the pipe ends in a position coaxial with respect to each other in a view corresponding to that of FIG. 1;
  • FIG. 3 shows a view of the device according to FIGS. 1 and 2 taken in an axial direction
  • FIG. 4 shows a view corresponding to FIG. 1 of a modified embodiment of the device.
  • FIG. 5 shows a view corresponding to FIG. 4 with the pipe ends in a position coaxial to each other.
  • the invention proposes, in a device as mentioned at the outset that, on its side facing the stop ring, the bearing ring should have an annular surface lying in a plane inclined at an angle to a plane at right angles to the axis of the bearing ring and that a similarly inclined stop surface is formed in the coupling part, the annular surface of the bearing ring resting on this stop surface.
  • the stop surface on which the annular surface of the bearing ring comes to rest can be an integral part of the stop ring of the coupling part projecting inwards, i.e. the stop ring is formed accordingly.
  • the stop surface is an integral part of a wedge ring which is inserted into the coupling part between the stop ring and the bearing ring. The use of this type of wedge ring facilitates manufacture since the working of an appropriate, inclined surface inside the coupling part will usually require greater technical expenditure.
  • the wedge ring can be locked advantageously with respect to the coupling part so as to be fixed and unable to rotate. This can be achieved for example by means of caulking, pinning etc.
  • the contact pressure produced by the operating pressure falls below a certain value or takes on the value zero for example when cutting off the operating pressure.
  • a change in the pivot position between the pipe ends is not always ruled out even without twisting between the bearing ring and the stop surface in the coupling part.
  • a change in the pivot position is possible in fact if the pipeline elements connected together are not fixed in their position relative to each other i.e. if there are no fastenings, mounting brackets etc. present which keep the pipeline elements in a predetermined position.
  • the pipeline elements can be brought into the coaxial position by means of outer action of force from a pivoted position.
  • the bearing ring located in the coupling part and in that peripheral region which has the smallest axial expanse can be displaced towards the connecting element and thus can leave the inner bearing surface in the coupling part which is in the shape of a circle segment.
  • a support surface in the shape of a spherical segment should be constructed on the side of the bearing ring facing the connecting part; that the connecting part should have a complementary surface in the shape of a spherical segment and cooperating therewith; and that the spherical radius of the support surface and the complementary surface should be smaller than a radius corresponding to the spacing between a bearing point of the outer bearing ring surface on the bearing surface of the coupling part and the point diametrially opposite this bearing point on the outer end edge of the support surface.
  • the sphere radius of the support surface and of the complementary surface should be approximately equal to the inner radius of the bearing ring.
  • the support surface and the complementary surface are placed as far as possible near the clear cross-section of the pipe and this is advantageous for reasons of functioning and manufacture.
  • an internal ring is inserted into the bearing ring, this internal ring projecting on the side of the bearing ring facing the connecting element and the projecting part of said internal ring having the support surface.
  • a pipe end 10 is provided with a bearing ring 11, which is in the shape of a spherical segment at its outer periphery and has an annular groove 12 into which an annular seal 13 is inset.
  • the bearing ring 11 is surrounded by a coupling part 14 which has a bearing surface 15 matched to the shape of the bearing ring 11 on its inside and is provided at one end with an inwardly projecting stop ring 16.
  • the clear inner diameter of the said stop ring 16 is dimensioned so that sufficient space is present for pivoting the pipe end 10 inside the coupling part 14, while the bearing ring 11 is engageable to the rear in an axial direction in all circumstances.
  • the bearing ring 11 has an annular surface 17 inclined with respect a plane at right angles to the axis of the pipe end 10 at its end facing the stop ring 16.
  • a wedge ring 18 is inserted between the bearing ring 11 and the stop ring 16, the side of the wedge ring 18 facing the bearing ring 11 being constructed also as an inclined stop surface 19.
  • the wedge ring 18 is retained inside the coupling part 14 against twisting and axial displacement with the aid of pins 32, only one of which is shown here.
  • the stop surface 19 and the annular surface 17 can be roughened if necessary in order to reduce the rotatability existing between the pipe end 10 and the coupling part 14 during operation by increasing the friction.
  • the other pipe end 20 is provided with a connecting part 21 which is constructed as a plug part fitting into the coupling part 14.
  • the connecting part 21 is provided with an outer collar 24.
  • a further collar 25 is located at the outer periphery of the coupling part 14.
  • Shell parts 26 and 27 which are connected together in articulated manner at one end and can be closed at their outer ends with the aid of a lever lock (not shown) serve to hold together the coupling part 14 and the connecting part 21.
  • the shell parts 26 have radially inwardly projecting flanges 28 which engage behind the collars 24 and 25.
  • the handle 29 fixed to the pipe end 10 has such a position in the rotary position shown in FIGS. 2 and 3, in which the pipe ends 10 and 20 lie coaxially with respect to each other, that it is approximately at the center of the handle 29 which runs crosswise and is fixed to the coupling part 14.
  • the handle 29 fixed on to the pipe end 10 can therefore serve quite well as a marking which cooperates with the scale marks 30. If necessary a marking 31 can be provided additionally however as can be seen in FIG. 2.
  • FIG. 1 the largest achievable pivot position is shown in which the inclinations of the annular surface 17 and the stop surface 19 add together to the full extent.
  • FIGS. 4 and 5 where the individual parts of the device of the embodiment shown in FIGS. 1 to 3 correspond thereto, the same reference numbers have been used. Thus it is only necessary to explain in greater detail below the differences with respect to the first embodiment.
  • the pipe end 10 does not now penetrate quite so far into the bearing ring 11.
  • An internal ring 33 is inserted from the end facing the connecting part 21 and is fixed by welding in such a position that it projects to some extent out of the bearing ring 11.
  • the projecting part forms an outer support surface 34 which is in the shape of a spherical segment, said support surface running annularly along the periphery and its radius r corresponding to the inner diameter of the bearing ring 11.
  • the internal ring 33 projects approximately up to half of the axial length of the bearing ring 11 into it and abuts the end surface of the pipe end 10 which is inserted into the bearing ring 11 from the other side.
  • the connecting part 21 has a corresponding surface 35 on its side facing the bearing ring 11 said corresponding surface 35 having the same radius r, the support surface 34 abutting the corresponding surface 35.
  • the device thus has the following mode of operation:
  • FIG. 4 shows the largest achievable pivot position in which the inclinations of the ring surface 17 and the stop surface 19 add together.
  • the desired pivot angle can be predetermined between these two positions by means of appropriate relative rotation between the bearing ring 11 and the wedge ring 18 or the coupling part 14 connected thereto. In any inclined position, the ring surface 17 and the stop surface 19 abut each other fully.
  • the bearing ring 11 is supported in any pivot position by the support surface 34 of its internal ring 33 and also with respect to the connecting part 21 in an axial direction.
  • the radius r of the support surface 34 and of the corresponding surface 35 is smaller than the radius R indicated.
  • the radius R starts from a rotation or tilting point about which tilt would occur, being the corresponding bearing point of the bearing ring 11 on the bearing surface 15 of the coupling part 14 when the operating pressure is too small or is non-existent inside the coupling part 14, if the pipe end 10 retained or fixed in no other way, were to move downwards.
  • the relatively slightly curved spherical segment-shaped outer periphery of the bearing ring 15 and thus the annular seal 13 could then leave the bearing surface 15 of the coupling part 14 in the lower region and be moved towards the connecting part 21 because, in this region, the spherical segment shape is not in a position to prevent such a movement particularly when taking manufacturing tolerances into account.
  • the radius r could in fact be selected slightly larger with respect to the radius R, whereby the part of the inner ring 33 projecting out of the bearing ring 11 would have to be correspondingly larger in dimension; however there would be a less favourable positive connection in the region of the support surface 34 and the corresponding surface 35.
  • the inner ring 33 having the bearing ring 11 can be manufactured in one piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
US05/935,978 1977-09-07 1978-08-22 Device for connecting pipe ends Expired - Lifetime US4252347A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2740206 1977-09-07
DE2740206 1977-09-07
DE2804017 1978-01-31
DE19782804017 DE2804017C3 (de) 1978-01-31 1978-01-31 Vorrichtung zum Verbinden zweier Rohrenden

Publications (1)

Publication Number Publication Date
US4252347A true US4252347A (en) 1981-02-24

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Family Applications (1)

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US05/935,978 Expired - Lifetime US4252347A (en) 1977-09-07 1978-08-22 Device for connecting pipe ends

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US (1) US4252347A (fr)
CA (1) CA1088587A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505016A1 (fr) * 1981-04-30 1982-11-05 Hughes Hydrotech Inc Raccord a rotule actionne par une pince de serrage
US4522433A (en) * 1982-05-14 1985-06-11 Stanley Aviation Corporation Spherical seat flexible O-ring coupling
US4695079A (en) * 1984-11-03 1987-09-22 Karl Weinhold Device for connecting the ends of two pipes
US4747622A (en) * 1986-01-23 1988-05-31 Karl Weinhold Pipe connection
US5314024A (en) * 1992-08-10 1994-05-24 Cooper Industries, Inc. Angular and radial self-aligning coupling
US20100225108A1 (en) * 2009-03-05 2010-09-09 Norma Germany Gmbh Connecting assembly with a first pipe connection and a second pipe connection and a lock ring assembly for a connecting assembly of this type
US20120074691A1 (en) * 2010-09-23 2012-03-29 Bantz Daniel L High pressure make and break fluidic seal system
US20210131522A1 (en) * 2019-11-04 2021-05-06 Beijingwest Industries Co., Ltd. Bracket for attachment with a hydraulic damper assembly and a method of joining a bracket and a hydraulic damper assembly

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE821890C (de) * 1949-04-26 1951-11-22 Karl Peter May Rohrgelenk
FR1170250A (fr) * 1957-02-13 1959-01-12 Stora Kopparbergs Bergslags Ab Raccord pour tubes, tuyaux et éléments analogues
FR1185193A (fr) * 1957-10-25 1959-07-30 Bague conique pour tuyauteries
US3649052A (en) * 1970-06-03 1972-03-14 Clifford H Snyder Jr Bayonette lock coupling
US3695644A (en) * 1970-03-30 1972-10-03 Lockheed Aircraft Corp Ball type flexible coupling for rigid conduits
US3844589A (en) * 1971-10-12 1974-10-29 Pont A Mousson Locking device for pipe elements
SU465518A1 (ru) * 1972-10-10 1975-03-30 Предприятие П/Я А-7354 Соединение труб
US3891246A (en) * 1973-12-03 1975-06-24 Mc Donnell Douglas Corp Fluid line coupling
US4077657A (en) * 1976-03-22 1978-03-07 Smith, International, Inc. Adjustable bent sub

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE821890C (de) * 1949-04-26 1951-11-22 Karl Peter May Rohrgelenk
FR1170250A (fr) * 1957-02-13 1959-01-12 Stora Kopparbergs Bergslags Ab Raccord pour tubes, tuyaux et éléments analogues
FR1185193A (fr) * 1957-10-25 1959-07-30 Bague conique pour tuyauteries
US3695644A (en) * 1970-03-30 1972-10-03 Lockheed Aircraft Corp Ball type flexible coupling for rigid conduits
US3649052A (en) * 1970-06-03 1972-03-14 Clifford H Snyder Jr Bayonette lock coupling
US3844589A (en) * 1971-10-12 1974-10-29 Pont A Mousson Locking device for pipe elements
SU465518A1 (ru) * 1972-10-10 1975-03-30 Предприятие П/Я А-7354 Соединение труб
US3891246A (en) * 1973-12-03 1975-06-24 Mc Donnell Douglas Corp Fluid line coupling
US4077657A (en) * 1976-03-22 1978-03-07 Smith, International, Inc. Adjustable bent sub

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505016A1 (fr) * 1981-04-30 1982-11-05 Hughes Hydrotech Inc Raccord a rotule actionne par une pince de serrage
US4522433A (en) * 1982-05-14 1985-06-11 Stanley Aviation Corporation Spherical seat flexible O-ring coupling
US4695079A (en) * 1984-11-03 1987-09-22 Karl Weinhold Device for connecting the ends of two pipes
US4747622A (en) * 1986-01-23 1988-05-31 Karl Weinhold Pipe connection
US5314024A (en) * 1992-08-10 1994-05-24 Cooper Industries, Inc. Angular and radial self-aligning coupling
AU656276B2 (en) * 1992-08-10 1995-01-27 Cooper Cameron Corporation Angular and radial self-aligning coupling SEALING CLERK: do not seal untill change of assignment completed.
US20100225108A1 (en) * 2009-03-05 2010-09-09 Norma Germany Gmbh Connecting assembly with a first pipe connection and a second pipe connection and a lock ring assembly for a connecting assembly of this type
US20120074691A1 (en) * 2010-09-23 2012-03-29 Bantz Daniel L High pressure make and break fluidic seal system
US20210131522A1 (en) * 2019-11-04 2021-05-06 Beijingwest Industries Co., Ltd. Bracket for attachment with a hydraulic damper assembly and a method of joining a bracket and a hydraulic damper assembly
US11512758B2 (en) * 2019-11-04 2022-11-29 Beijingwest Industries Co., Ltd. Bracket for attachment with a hydraulic damper assembly and a method of joining a bracket and a hydraulic damper assembly

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Publication number Publication date
CA1088587A (fr) 1980-10-28

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